Method of and apparatus for interfacing and connecting a wireless device and a wireless network using a subscriber identity module having plural IMSI associates with different network operators

ABSTRACT

A wireless device includes a single SIM, plus an application module adapted to enable the device to operate as though it included two or more different SIMs. The module, referred to as a ‘proprietary applications module’ (PAM) is connected to, or built into, a wireless device (WD). The PAM is capable of switching all incoming traffic by associating the WD to one specific subscriber identity sub-module, referred to as “Local SIM” (LS). It can also switch or re-route all outgoing traffic by associating the same WD with a different subscriber identity sub-module, typically a “Roaming SIM” (RS). In a preferred embodiment, the PAM, RS and LS are built-into a single SIM for use in a WD; alternatively the PAM is built-into a WD and the RS and LS are built-into the single SIM.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a divisional of U.S. application Ser. No.12/281,844, filed Jan. 8, 2009, which claims the priority ofPCT/GB2007/000799 filed on Mar. 7, 2007, which claims priority to GB0604573, filed Mar. 7, 2006, the entire contents of which are herebyincorporated herein by reference.

FIELD OF THE INVENTION

This invention relates to a method and apparatus for interfacing andconnecting a wireless device and a wireless network using a subscriberidentity module (SIM). It enables in-coming and out-going SMS, voice anddata calls to be routed cost effectively and flexibly.

BACKGROUND OF THE INVENTION

Wireless devices can now handle voice and/or data, allowing simplexand/or duplex voice calls, video calls, text messaging, and internetbrowsing. Some wireless communication devices can now handlevoice-over-internet-protocol (VoIP) calls, and others are able to handlemultimedia (voice, video, graphics) calls through wireless networksand/or through wireless networks connected to the internet or mediaservers.

Different types of calls, initiated by wireless devices, can berestricted for some or most of their outgoing traffic; for example voiceand data calls, as well as internet web browsing, can be restricted tothose call tariffs made available by the wireless network(s) that issubscribed to. Those wireless networks could be operated by traditionalwireless network operators or so called virtual network operators. Therestrictions can even limit which web servers the user is actuallyallowed to access. In most or all cases the restrictions will limit theusers in their home country to only one wireless network, i.e. the homewireless network to which the user is subscribed to.

Users of wireless devices subscribed to a specific wireless network intheir home country, may however wish to have a choice of call set-uproute(s), and also have the choice of viewing any web server or web-pagethat they desire, and to initiate their outgoing calls at the tariff oftheir choice and through any of the wireless network(s) available intheir home country as well as when roaming abroad. This would give eachwireless device user the freedom to choose the cheapest option for eachcall set-up route for any outgoing traffic, such as outgoing-SMS, -voicecall, -data call.

There are several ways of achieving this, but all have drawbacks.

It is known to provide a wireless device (e.g. a mobile telephone) with2 separate SIMs, each associated with a different network operator; the2 separate SIMs sometimes need to be cut down to fit a single SIMreader, or else a special carrier for two SIMs is provided that itselfconnects to a conventional SIM package. These devices are sometimescalled ‘ghost SIMs’. So, for example, a person who frequently travelsbetween the UK and the US would have a single mobile telephone that hecould use in both countries, fitted with a dual SIM ‘ghost’. If his homemobile operator is based in the UK, he would normally pay roamingcharges when he makes calls from the US; call costs can be 10× greaterfrom the US because of this. But with a dual SIM ‘ghost’ on his mobiletelephone, the user can toggle between SIMs by repeatedly turning thedevice off/on. So he can use a SIM from a US operator when in the US anda SIM from a UK operator when in the UK. But that means that incomingcalls to the UK telephone number will go unanswered when the US SIM isbeing used, and vice versa, which is inconvenient. The user could simplytoggle the phone to the US SIM only when he needs to make a call fromthe US, and then remember to toggle back afterwards. But that isinconvenient. And the user also has to obtain the 2 separate SIMs in thefirst place, which can again be inconvenient.

He could alternatively keep 2 different mobile telephones, one for usein the UK and one for the US, with each associated with a UK and USoperator respectively. Then, no roaming charges will be paid when hecalls from the US, because he uses the mobile telephone associated withthe US operator. But having 2 different mobile telephones is costly andinconvenient, especially as people will no doubt call him on his UKmobile telephone number when he is in the US, so he would need to haveboth devices constantly at hand when traveling in the US.

Another solution is to have a conventional mobile telephone using just asingle SIM, but to have 2 different SIMs, and to physically swap the SIMfrom a UK operator into the device when in the UK, and swap in a SIMfrom a US operator when in the US. But that is very inconvenient, andcan mean that calls to the UK telephone number will just divert tovoicemail when the US SIM is in use, and vice versa when the UK SIM isin use.

Before summarising the invention, we will explain some background terms.The IMSI is a unique non-dialable number allocated to each mobilesubscriber that identifies the subscriber and his or her operatorsubscription. The IMSI is stored in the Subscriber Identity Module(SIM). The IMSI is made up of three parts (1) the mobile country code(MCC) consisting of three digits, (2) the Mobile Network Code (MNC)consisting of two digits, and (3) the Mobile Subscriber Identity Number(MSIN) with up to 10 digits.

A Home Location Register (HLR) is a database that contains mobilesubscriber information for all subscribers to an operator. A VisitorLocation Register (VLR) is a database owned and maintained by a mobileoperator. It contains temporary information about mobile subscribersthat are currently located in a geographic area served by that mobileoperator, but whose Home Location Register (HLR) is elsewhere.

HLR subscriber information includes the International Mobile SubscriberIdentity (IMSI), service subscription information, location information(the identity of the currently serving Visitor Location Register (VLR)to enable the routing of mobile-terminated calls), service restrictionsand supplementary services information. The HLR also initiatestransactions with VLRs to complete incoming calls and to updatesubscriber data.

When a mobile subscriber roams away from his home location and into aremote location (typically to a different country), SS7 messages areused to obtain information about the subscriber from the HLR, and tocreate a temporary record for the subscriber in the VLR. There isusually one VLR per operator. The VLR automatically updates the HLR withthe new location information, which it does using an SS7 Location UpdateRequest Message. The Location Update Message is routed to the HLRthrough the SS7 network, based on the global title translation of theIMSI that is stored within the SCCP Called Party Address portion of themessage. The HLR responds with a message that informs the VLR whetherthe subscriber should be provided service in the new location.

SUMMARY OF THE INVENTION

The present invention is a wireless device including a single SIM, thewireless device further including an application module adapted toenable the device to operate as though it included two or more differentSIMs.

The application module may be adapted to switch the single SIM between(a) operating as a local SIM and (b) operating as a roaming SIM. Theapplication module can be a software module that is downloaded to thedevice.

The user can manually control the switching between the local SIM androaming SIM operation; switching can for example be done by an end-useroperating a switch, or an end-user interacting with an on-screen menudisplayed on the device.

In one implementation, when the device is operating with a local SIM, ituses a Local SIM sub-module that is associated with a network operator 1based in country A; when the device is operating with a roaming SIM, ituses a roaming SIM sub-module that is associated with a network operator2 based in country B. The local SIM sub-module includes an IMSI numberassociated with a subscriber and operator 1. The roaming SIM sub-moduleincludes an IMSI number associated with the subscriber and operator 2.Its standby mode is to use the local SIM sub-module so that incomingcalls using the IMSI number associated with operator 1 are received. Butthe user can use the roaming SIM sub-module so that outgoing calls usethe IMSI number associated with operator 2. The advantage to the usercomes because the tariff associated with operator 2 for outgoing callsis lower than the tariff associated with operator 1 for outgoing calls;the tariff associated with operator 2 for outgoing calls made when thesubscriber is outside country A can for instance be lower than thetariff associated with operator 1 for outgoing calls made when thesubscriber is outside country A. The tariff associated with operator 2for outgoing calls made when the subscriber is inside country A can alsobe lower than the tariff associated with operator 1 for outgoing callsmade when the subscriber is inside country A. Operator 2 might alsoplace fewer restrictions than operator 1, including restrictions ondestination servers accessed. When a call terminates, the device revertsto its standby mode of using the local SIM sub-module.

The local SIM sub-module and the roaming SIM sub-module are sub-moduleswithin the single SIM (so that, for example, the application module,although in the wireless device, is not part of the SIM itself).Alternatively, the application module, the local SIM sub-module and theroaming SIM sub-module are each sub-modules within the single SIM.

Other implementation features are that: the application module controlscommunication to a wireless network and includes one or more of thefollowing sub-modules: SIM control unit; features control unit; localSIM sub-module, roaming SIM sub-module; external switch controlling theselection of either the local SIM or roaming SIM sub-modules. The SIMcontrol unit enables the local SIM sub-module or roaming SIM sub-moduleto be selected. The features control unit enables the caller ID to bemodified. The features control unit enables the roaming SIM sub-moduleto be selected when a user presses a predefined key on a wireless devicein which the single SIM is used. The external switch allows theapplications module to control the selection of the local SIM sub-moduleor the roaming SIM sub-module. The applications module selects the localSIM sub-module as a default when powered on. The SIM control unit storesa PIN associated with each of the local and roaming sub-modules and usesthat PIN automatically to eliminate the need for manual entry of thatPIN. The SIM control unit selects the local SIM sub-module as a defaultwhen powered on.

The present invention can enable communications with a mobile virtualnetwork operator, virtual telecoms operator or a virtual telecomsprovider. The wireless device itself can be a mobile telephone, wirelesscard, smart phone or wireless module.

Another aspect of the invention is a downloadable software basedapplication module that, when running on a wireless device, results inthat device being a device as defined above.

A further aspect is a method of communicating with a wireless network,comprising the step of using a wireless device as defined above.

A final aspect is a SIM including a local SIM sub-module with a firstIMSI and a second SIM sub-module with a different IMSI, the SIM beingswitchable between either of the sub-modules. The SIM is physicallypackaged in the same package as a conventional SIM. The SIM may includean application module to control the switching. The SIM, when used incombination with a wireless device, renders that wireless device as awireless device as defined above.

In a preferred implementation, a proprietary applications module (PAM)in the SIM is connected to, or built into, a wireless device (WD). ThePAM is capable of switching all incoming traffic by associating the WDto one specific subscriber identity sub-module (SIM), referred to as“Local SIM” (LS). It can also switch or re-route all outgoing traffic byassociating the same WD with a different subscriber identity sub-module(SIM), which we will call a “Roaming SIM” (RS). The PAM, RS and LS canbe embedded into one single physical SIM.

The PAM establishes data communication between the WD and a wirelessnetwork (WN). Each time the WD powers-on, the PAM selects the Local SIM,which gives a location update to the home location register (HLR)attached to its local home wireless network (LHWN). This allows allincoming traffic to be associated with the Local SIM. The PAM canhowever switch from the Local SIM towards the Roaming SIM; the RoamingSIM then gives location updates to a visitor location register (VLR)attached to any of the available wireless networks (WN or WNn),associated with the Roaming SIM. This can be done any time the WD userchooses so manually (or, optionally, automatically). This is normallydone prior to the WD user initiating outgoing traffic, such as outgoingvoice and data calls and, optionally, also outgoing short messageservice (SMS).

This allows the WD to make use of any of the available local wirelessnetworks. By associating the WD with the Roaming SIM, outgoing trafficwill be billed at the roaming tariffs established between the homewireless network (RHWN) and each individual local wireless network (LHWNor LWN1 to LWNn). This can be much cheaper for the subscriber and cangive greater flexibility—for example enabling a broader range of webservers to be used.

The PAM will, after ending each originated outgoing traffic session,switch (automatically or manually using an external switch) back to theLocal SIM, which provides a location update to its home locationregister (HLR) attached to its local home wireless network (LHWN) whenthe WD is in its Local SIM home country. This allows the WD to receiveany incoming traffic at no charge as ‘calling-party-pays’ is applicableto its local home wireless network (LHWN). Alternatively and optionally,when the WD is in a different country, the Local SIM is also still used;it sends location updates to a visitor location register (VLR) attachedto a roaming wireless network (RWN). This allows the WD to receive anyincoming traffic at the tariff rate established by its local homewireless network (LHWN).

But in essence, the WD user always has the option to choose which SIMoperation (Local SIM or Roaming SIM) it will use for its incoming and/oroutgoing traffic.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram of a communications system with wirelessdevices communicating through a wireless interface and a wirelessnetwork(s) in accordance with the present invention.

FIG. 2 shows two example implementations and some of the differentcombinations using the proprietary applications module (PAM).

FIGS. 3 and 4 are example implementations with respect to thesub-modules of the proprietary application module (PAM).

DETAILED DESCRIPTION OF THE DRAWINGS

Specifically, FIG. 1 is a block diagram of a wireless communicationssystem, which can be used to implement an embodiment of the presentinvention. For this exemplary embodiment, there is shown a wirelessdevice (WD) 1, with a built-in PAM 2, and a wireless network whichprovides connection for voice and data communication between the WD andthe wireless network through a wireless interface IF-B 3. The wirelessinterface IF-B 3 in turn allows connection to any communication devicewith a wired or wireless connection wired to such wireless networks.Examples of components in this system include, but are not limited to, afixed network, an application server, a media server, a voice over IPnetwork or even a different wireless network, or a multipleconfiguration of the previous. There can be multiple wireless devices(WD n), multiple wireless interfaces (IF-Bn), multiple wireless networks(WNn), multiple fixed networks, multiple application servers, a mediaservers, multiple voice over IP networks.

In FIG. 1, there is shown a wireless device (WD) 1, with a built-in PAM2, and several wireless networks (WN, WNn) 4, 4A, 4B, such as a localhome wireless network (LHWN) 4, additional different wireless networks(WN1, WNn) 4A, 4B called local wireless networks (LWN1, LWNn) 4A, 4B anda different wireless network (WN) called the roaming home wirelessnetwork (RHWN) 5.

The wireless device WD 1 has an embedded PAM 2. The WD 1 is configuredin accordance with a combination of technologies used in the field ofhandheld wireless devices and personal digital handheld wirelessdevices, such as (but not limited to) wireless phones, cellular phones,mobile phones, hand held radio frequency digital communication devices,personal digital assistants and so called smart-phones, which can eachcommunicate with the wireless networks as described.

A wireless network WN 4 is shown. The wireless network is configured inaccordance with a combination of technologies used in the field ofwireless digital communications networks; such as but not limited toGSM-GPRS-WAP based wireless networks, GSM-GPRS-WAP-EDGE based wirelessnetworks, UMTS based wireless networks, PCS based wireless networks, DCSbased wireless networks, TDMA based wireless networks, WiFi or WiMaxbased wireless networks.

The preferred embodiment of the present invention and its advantageswill now be described. Essentially, in accordance with an embodiment ofthe present invention, we have a method and apparatus for interfacingand connecting a wireless device(s) 1 and a wireless network 4, 4A, 4Band 5 for in- and out-going traffic, such as SMS and/or voice and/ordata call(s). The method and apparatus enable routing, interfacing andconnecting a handheld wireless device and a wireless network. Calls canbe set up in accordance with a user's own choice of routing to any 3rdparty end user, connecting over wireless networks, fixed networks,servers or the internet.

The WD 1 with a built-in PAM 2 establishes data communication betweenthe WD 1 and a wireless network 4-5 coupled to a digital communicationsystem associated with one of the Local SIM (LS) 21 or Roaming SIM (RS)22 identities; both LS 21 and RS 22 are embedded into a single SIM, andare each defined by a unique IMSI number. As a first step, the PAM 2, 2n chooses either the Local SIM (LS) 21 or Roaming SIM (RS) 22 identity.The WD 1 provides location updates each time the PAM 2 (e.g. built intothe WD) changes SIM identity (e.g. selects a different SIM sub-module,LS 21 or RS 22, each embedded into the single SIM, which itself residesin the WD 1. Each sub-module LS 21 and RS 22 is associated with adifferent IMSI and therefore network operator. WD 1 also provides alocation update each time it changes wireless network name or wirelessnetwork country or region or state.

When the WD 1 is in the home country associated with the Local SIM (LS)21, the PAM 2 establishes data communication between the WD 1 and awireless network (WN) 4-5. As a first step, the PAM 2 selects the LocalSIM 21 to provide location updates to its home location register (HLR) 6attached to its local home wireless network (LHWN) 4, associated withthe Local SIM 21. This occurs each time the WD 1 powers-on, allowing allincoming traffic to be associated with the Local SIM 21. The PAM 2 canswitch from the Local SIM 21 to the Roaming SIM 22 (which involveschanging the IMSI number declared by the WD 1) to give location updatesto a visitor location register (VLR) 7 attached to any of the availablewireless networks (WN or WNn) 4, 4A, 4B, associated with the Roaming SIM22, any time the WD 1 user chooses. This choice is done manually oroptionally automatically prior to any time the WD 1 user is about toinitiate outgoing traffic, such as outgoing voice and/or data calls andoptionally also outgoing SMS.

This allows the WD 1 to make use of any of the available local wirelessnetworks 4, 4A, 4B, based in the home country of the LS 21; associatingthe WD 1 with the Roaming SIM 22 enables the outgoing traffic to be atthe roaming tariffs established between the roaming home wirelessnetwork (RHWN) 5, based in a different country to the country of the LS21, and each individual local wireless network (LHWN or LWN1 to LWNn) 4,4A, 4B.

The PAM 2 will, after ending each originated outgoing traffic session,switch to the Local SIM (LS) 21 to provide location updates to its homelocation register (HLR) 6 attached to its local home wireless network(LHWN) 4 when the WD 1 is in its Local SIM 21 home country. Switchingcan be done automatically or manually by the user, through an internaluser menu or an external switch. This switching allows the WD 1 toreceive any incoming traffic at no charge as ‘calling party pays’ isapplied by its local home wireless network (LHWN) 4. Alternatively andoptionally, location updates can be made to a visitor location register(VLR) 7 attached to a roaming wireless network (RWN) 5 when the WD 1 isin a country different then the one associated with the LS, allowing theWD 1 to receive any incoming traffic at the tariff rate established byits local home wireless network (LHWN) 4 and the roaming wirelessnetwork for such incoming roaming calls. The WD 1 user always has theoption to choose which of the SIM (Local SIM 21 or Roaming SIM 22) itwill use for either or both of its incoming or its outgoing traffic.

FIG. 2 show two of the preferred integration embodiments of theproprietary application module (PAM) of the invention, which in thecontext of the foregoing are self explanatory, basically showing theintegration of a PAM within a wireless device.

FIGS. 3 and 4 show two different preferred embodiments of theproprietary application module (PAM) of the invention, which in thecontext of the foregoing are self explanatory, basically showing someexamples of the different combinations of PAM by combining itssub-modules respectively. In particular, the embodiment of theproprietary application module (PAM) of the invention as shown in FIG. 4allows for the integration of the PAM within a single subscriberidentity module (SIM) capable of handling at least two differentidentities, corresponding respectively to the LS and the RS as describedabove.

It should be clear from the preceding disclosures that the presentinvention provides a method and apparatus of interfacing and connectinga wireless device(s) and a wireless network(s) for in- and out-goingtraffic, such as SMS and/or voice and/or data call(s) routing. Theprincipals, preferred embodiments and modes of operation of the presentinvention have been described in the claims, descriptions ofimplementation and drawings. This invention provides an advantageallowing any wireless device (WD) with a built-in proprietaryapplications module (PAM) and any wireless network (WN) to beinterconnected through the existing wireless interfaces using any of the(at least two) SIM identities that declare different IMSI numbers, suchas a Local SIM (LS) or Roaming SIM (RS). Moreover this inventionprovides an advantage allowing any wireless device with a built-in PAMto choose the call routing for both in- and out-going calls.

This ability to interconnect and communicate the LS and/or RS betweenthe PAM and a wireless device (WD) (that includes the built-in PAM),with a wireless network (WN, WNn), is particularly advantageous for dataand voice calls and optionally SMS routing. Freedom of choice ofwireless networks is not readily possible with prior art approaches; butis fully in the hand of the end-user of any wireless network for any WDwith a built-in PAM, that implements this invention.

The implementation of this invention and any variations andimprovements, where the PAM(s) would reside in the wireless end-userswireless device(s) (WD), could in effect allow setting-up a “mobilevirtual network operator” (MVNO), a “virtual telecoms operator” (VTO) ora “virtual telecoms provider (VTP), thus introducing more competition inthe wireless and/or cellular market place, greatly benefiting end-users,without the need for any wireless device and/or wireless handheld userto change its current Local SIM subscription (LS) with its current homewireless network operator in the country the end-user resides.

Instead, the end-user can benefit from the advantages of this inventionby simply downloading or embedding a PAM, as described within thisinvention, within his wireless device (WD) and additionally subscribe toa Roaming SIM subscription (RS) with a so called roaming wirelessnetwork operator (RHWN) based in a country different from the countrywhere he resides; the roaming wireless network operator must have anadvantageous call tariff for roaming calls, and in particular a moreadvantageous call tariff for the end-user when originating calls withsuch RS from the country he resides in compared to calls tariffs whenoriginating calls with his LS from the country he resides in.

This allows the end-user to keep his original phone number identityassociated with the LS and the corresponding local home wireless network(LHWN) based in the country (Country A) where the end-user resides,whilst benefiting from the advantageous tariffs whenever applicable forhis originated outgoing calls associated with the RS and thecorresponding roaming home wireless network (RHWN) based in a countrydifferent from the previously mentioned (Country A). This applies if theend-user is in his home country, or even when he is in a differentcountry. The latter is traditionally referred to as roaming, meaning theLS is roaming; in the embodiment of this invention the RS is almostalways roaming, but does not have to be.

A practical example will illustrate this. Typically, the RHWN isassociated with the RS and LS, each having their own unique IMSI; eachembedded into the same single SIM. The IMSI of the LS is associated withthe LHWN. The RHWN could be a small mobile network operator in a smallcountry with limited growth potential, and therefore is more willing toprovide call tariffs with smaller margins for international calls. TheLHWN however provides in-country and international tariffs in line withmarket average, higher margins. This means that, for example, whenswitching to the RS for outgoing international calls, the cost to the WDuser can be more advantageous as margins are kept more competitive, andstill provide additional revenue to the smaller RHWN which it otherwisecould not obtain. This allows revenue growth to the RHWN and morecompetitive lower pricing to the WD users. And in the case that the SIMwith a built-in PAM, RS and LS is provided by a Mobile Virtual NetworkOperator (MVNO) to its WD users, it would allow the MVNO to compete evenin the country of its own LHWN for international call tariffs, anddefinitely abroad when its WD users are roaming. This is an advantagethat few or no other MVNOs have in the country of their own LHWN,allowing subscribers to this innovative MVNO to make use of any of theWireless Networks, using the PAM and RS in their own devices; this willalways ensure the best available wireless coverage.

The architecture as described herein, in as far as related to virtualnetworks, allows scalability where the Roaming SIMs (RS) can be the samefor any country with whom the associated roaming wireless network hasroaming agreements with, and where the tariffs for outgoing traffic aremore advantageous in comparison to the tariffs of outgoing call tariffswith Local SIMs in such countries. This invention applies partly offully, by simply substituting in each different country the Local SIM,as described within this invention, by the actual Local SIM (LS)identity of each individual end-user of such different country.

Summary of Various Implementation Features

The following are each optional features of the preferredimplementation.

The wireless device includes a proprietary applications module (PAM)capable of communicating with a Wireless Device (WD) and WirelessNetwork(s) through a wireless interfaces (IF-B).

-   -   WD and WDn are wireless devices and/or wireless handheld devices        in any available current and future wireless technologies        respectively, with a built-in PAM.    -   IF-B and IF-Bn are wireless interfaces in any available current        and future wireless technologies respectively.    -   WN and WNn are wireless networks in any available current and        future wireless technologies respectively.

Any individual or multiple PAM may be built-in into any WD or any suchother wireless device, such as but not limited to so called “handsets”,“handy”, “mobile phones”, “cellular phones”, “wireless phones”, “smartphones”, “wireless devices”, “wireless PC cards”, “wireless modules”

Any individual or multiple PAM may include all of the followingproprietary sub-modules or any single or multiple combination of thesesub-modules (or an equivalent of each such sub-module(s) performing asimilar function):

-   -   Sub-module; SIM Control Unit (SCU)    -   Sub-module; Features Control Unit (FCU)    -   Local SIM (LS)    -   Roaming SIM (RS)    -   External Switch (ES)

Any individual or multiple wireless device (WD) with a built-in PAM, maybe capable of communicating with any Wireless Network (WN) through

-   -   a wireless connection with a wireless or mobile network, or    -   a first wireless connection with a wireless or mobile network        and then through a second wireless and/or wired connection        through a fixed network or switching network to an applications        server, or    -   a first wireless connection with a wireless or mobile network        and then through a second wireless and/or wired connection        through a voice over internet protocol network or server to an        applications server.

The wireless device (WD), with a build-in PAM, is capable ofcommunicating with the Local Home Wireless Network (LHWN) and/or anyLocal Wireless Network (LWN1, LWNn) through the SIM Control Unit (SCU)sub-module. This SIM Control Unit (SCU) is a sub-part of the PAM andallows the WD, through its built in PAM, to select either the Local SIM(LS) or Roaming SIM (RS) to, for example, provide the WD location updatewith the Wireless Network WN (example: LHWN and/or LWN) for incomingand/or outgoing traffic respectively.

The wireless device (WD), with a built-in PAM, is optionally capable ofautomatically modifying certain settings of the WD, through the FeaturesControl Unit (FCU). The Features Control Unit (FCU) sub-module isoptionally a sub-part of the PAM and allows the WD, through its built inPAM, to automatically modify the settings of the WD outgoing calleridentification (caller ID) for any specific outgoing traffic and/orselect the Roaming SIM when any number key is hit and/or when apre-defined hotkey is hit for such function, for example to disable theoutgoing caller ID of the WD for all outgoing-traffic.

The wireless device (WD), with a built-in PAM, is optionally capable ofcommunicating with the Local Home Wireless Network (LHWN) and/or anyLocal Wireless Network (LWN1, LWNn) through the External Switch (ES) andthe SIM Control Unit (SCU). The External Switch (ES), optionally asub-part of the PAM, allows the WD through its built in PAM to selecteither the Local SIM (LS) or Roaming SIM (RS), to, for example, providethe location update to the wireless network WN (for example: LHWN and/orLWN) for incoming- and/or outgoing-traffic respectively.

The PAM can be built into a single SIM, where such single SIM providesall of the functions of at least one of each of a LS, RS and SCU. ThePAM monitors the power supply provided by the WD, and at power-onselects, as a default, the LS. Optionally, the SCU will store, in itsinternal temporary memory, the PIN corresponding to its internal LS andRS respectively, such that when the SCU switches between its internal LSand RS, the user does not have to enter each time the corresponding PIN(except once after power-on of the WD). In the event this optionalfunction is available within the SCU, then the SCU will at each power-onalso reset the value of its internal PIN memory. The WD device user hasthe option to manually switch from the LS to the RS, through an externalswitch (ES) if available or through an internal user menu embedded ineach of the LS and/or the RS and/or the single SIM. For example, theuser can switch to the LS when the WD is in idle mode, allowing the WDto locate update to the WN with the LS identity and monitor for anyincoming traffic assigned to the LS identity. And it can then switch tothe RS, allowing the WD to locate update to the WN with the RS identity,prior to initiating some or all of the outgoing traffic assigned to theRS identity. Hence, when ending any outgoing traffic, the SCU willautomatically, by means of an embedded user menu within each of the LSand RS and/or single SIM, or manually by the user activating theexternal switch (ES), revert back to the LS. This allows the WD toprovide a location update to the WN with the LS identity and locationand therefore receive incoming traffic and/or signalling assigned to theLS identity.

The SCU can monitor the power supply of the PAM, provided by the WD, andat power-on select as default the Local SIM (LS). Optionally, the SCUwill store in its internal temporary memory the personal identificationnumber (PIN) corresponding to the LS and RS respectively, such that whenswitching between the LS and RS, the user does not have to enter eachtime the corresponding PIN (except once after power-on of the WD andPAM). In the event this optional function is available within the SCU,then the SCU will at each power-on also reset the value of its internalPIN memory. The WD device user has the option to manually switch fromthe LS to the RS manually through an external switch (ES) or optimallythrough an internal user menu embedded in each of the LS and/or the RS.For example, the user can switch to the LS when the WD is in idle mode,allowing the WD to provide location updates to the WN with the LSidentity and monitor for any incoming traffic assigned to the LSidentity. But the user can then switch to the RS, allowing the WD toprovide location updates to the WN with the RS identity, prior toinitiating some or all of the outgoing traffic. But, when ending anyoutgoing traffic, the SCU can automatically (or manually by the WD user,by means of the external switch (ES)), switch back to the LS, thusallowing the WD to provide location updates to the WN with the LSidentity and location; and hence receive incoming traffic and/orsignalling assigned with the LS identity.

Any individual or multiple PAM may be stored in any storage device(s)and/or server(s) connected to any communications system(s), such as, butnot limited to, so called “servers”, “internet servers”, “computers”,“PCs”, “media servers”, “wireless switching exchanges”, “fixed switchingexchanges”, “wireless network processors”, “fixed network processor”,“ATM network”, “ADSL network”, “DSL network”, “internet servers”,“intranet servers”. From these storage/server devices, any currentand/or future wireless device (and in particular any WD capable ofdownloading applications, for example GPRS, WAP, JAVA), can download aPAM or any evolution-, update-, upgrade-, modification- of the PAM.

Any individual or multiple PAM may be a part of any wireless device(WD), be it as software, firmware, hardware or a combination thereofwhich perform the same or an equivalent function.

Any such individual or multiple PAM may be activated or de-activated bythe user of each individual WD.

Many modifications and variations of this present invention are possiblein view of the above disclosures, drawings and explanations. Thus, it isto be understood that, within the scope of the appended claims, theinvention can be practiced other than as specifically described above.The invention which is intended to be protected should not, however, beconstrued as limited to the particular forms disclosed, orimplementation examples outlined, as these are to be regarded asillustrative rather than restrictive. Variations in changes could bemade by those skilled in the art without deviating from the spirit ofthe invention. Accordingly, the foregoing detailed descriptions anddrawings should be considered exemplary in nature and not limited to thescope and spirit of the invention as set forth in the claims.

The invention claimed is:
 1. A wireless device including a single SIM,the wireless device further including an application module adapted toenable the device to operate as though it included two or more differentSIMs in which the device includes two SIM sub-modules, each with adifferent IMSI and the application module is adapted to switch thesingle SIM between (a) operating as a local SIM using the firstsub-module, which is associated with a network operator 1 based incountry A and (b) operating as a roaming SIM using the secondsub-module, which is associated with a network operator 2 based incountry B, the switching occurring inside country A under the manualcontrol of a user to obtain lower cost routing when in that country Aand in which, at power-on, the sub-module operating as a local SIM isselected by default.
 2. The wireless device of claim 1, in which theapplication module that controls the switching between operation as alocal SIM and operation as a roaming SIM is a software module that isdownloaded to the device.
 3. The wireless device of claim 1 in whichswitching is done by an end-user operating a switch.
 4. The wirelessdevice of claim 1 in which switching is done by an end-user interactingwith an on-screen menu displayed on the device.
 5. The wireless deviceof claim 1, in which, when the device is operating as a local SIM, ituses a local SIM sub-module that is associated with a network operator 1based in country A.
 6. The wireless device of claim 1 in which, when thedevice is operating as a roaming SIM, it uses a roaming SIM sub-modulethat is associated with a network operator 2 based in country B.
 7. Thewireless device of claim 5 in which the local SIM sub-module includes anIMSI number associated with a subscriber and operator
 1. 8. The wirelessdevice of claim 6 in which the roaming SIM sub-module includes an IMSInumber associated with the subscriber and operator
 2. 9. The wirelessdevice of claim 7 in which its standby mode is to use the local SIMsub-module so that incoming calls using the IMSI number associated withoperator 1 are received.
 10. The wireless device of claim 9 in which theuser can use the roaming SIM sub-module so that outgoing calls use theIMSI number associated with operator
 2. 11. The wireless device of claim10 in which the tariff associated with operator 2 for outgoing calls islower than the tariff associated with operator 1 for outgoing calls. 12.The wireless device of claim 11 in which the tariff associated withoperator 2 for outgoing calls made when the subscriber is outsidecountry A is lower than the tariff associated with operator 1 foroutgoing calls made when the subscriber is outside country A.
 13. Thewireless device of claim 11 in which the tariff associated with operator2 for outgoing calls made when the subscriber is inside country A islower than the tariff associated with operator 1 for outgoing calls madewhen the subscriber is inside country A.
 14. The wireless device ofclaim 11 in which operator 2 places fewer restrictions than operator 1,including restrictions on destination servers accessed.
 15. The wirelessdevice of claim 1, in which the local SIM sub-module and the roaming SIMsub-module are sub-modules within the single SIM.
 16. The wirelessdevice of claim 1, in which the application module, the local SIMsub-module and the roaming SIM sub-module are each sub-modules withinthe single SIM.
 17. The wireless device of claim 9 in which, when a callterminates, then the device reverts to its standby mode of using thelocal SIM sub-module.
 18. A downloadable software based applicationmodule that, when running on a wireless device, results in that devicebeing a wireless device including a single SIM, the wireless devicefurther including an application module adapted to enable the device tooperate as though it included two or more different SIMs in which thedevice includes two SIM sub-modules, each with a different IMSI and theapplication module is adapted to switch the single SIM between (a)operating as a local SIM using the first sub-module associated with anetwork operator 1 based in country A and (b) operating as a roaming SIMusing the second sub-module associated with a network operator 2 basedin country B, the switching occurring inside country A under the manualcontrol of a user to obtain the lower cost routing when in that countryA and in which, at power-on, the sub-module operating as a local SIM isselected by default.
 19. A method of communicating with a wirelessnetwork, comprising the step of using a wireless device as claimed inclaim
 1. 20. A SIM including a local SIM sub-module with a first IMSIassociated with a network operator 1 based in country A and a second SIMsub-module with a different IMSI associated with a network operator 2based in country B, the SIM being switchable between either of thesub-modules inside country A under the manual control of a user toobtain the lower cost routing when in that country A and in which, atpower-on, the sub-module operating as a local SIM for country A isselected by default.
 21. The SIM of claim 20, further including anapplication module to control the switching.
 22. The SIM of claim 20,which, when used in combination with a wireless device, renders thatwireless device as a wireless device including a single SIM, thewireless device further including an application module adapted toenable the device to operate as though it included two or more differentSIMs.